Features essays, statistical data, period photographs, maps, advertisements, and documents.

The Americans: population and immigration -- Weather and climate -- Chronological events, 1914-1945 -- The American economy -- Transportation and communication -- Vital statistics -- Religion -- Politics and government -- Military forces and world wars -- States -- Possessions and dependencies of the United States -- Cities of the United States -- Profiles of prominent individuals -- Education -- Science, invention, and technology -- Art and architecture -- Agents of lifestyle -- Entertainment and sports -- Crime and punishment -- Selected documents.